Firewalls
The enterprise firewall estate is where good intentions go to accumulate. We design clean policy, audit the rules you already have, and keep the whole estate current.
Firewall rulesets grow by accretion: a rule added for a project that ended years ago, a temporary exception that became permanent, a vendor migration that doubled the policy. We bring order — a policy architecture that maps to how your business is actually segmented, and an audit that retires what no longer earns its place.
We are vendor-fluent across Palo Alto, Fortinet, Cisco, and others, and we treat lifecycle as a discipline: firmware kept current, configurations under version control, and changes that are observable and reversible.
Real estates are rarely single-vendor. We treat heterogeneity as a fact, not a problem to be solved: a clean policy abstraction at the top, vendor-specific implementation underneath, and the discipline to refactor when divergence stops earning its keep. We can also lead a deliberate consolidation when the case for it is strong.
Firewall change is where governance most often becomes theatre. We replace ticket-driven anarchy with version-controlled configuration, peer review, automated policy linting, and change windows the network team can actually defend. The result is a faster path for legitimate change and a much narrower one for risky change.
What we deliver
Policy architecture
Segmentation and rule design that reflects how the business really works, documented so it stays coherent.
Ruleset audit
Identification of shadowed, redundant, and overly-permissive rules, with a safe path to retire them.
Patching & lifecycle
Firmware and configuration kept current under version control, with change windows that respect your operations.
Outcomes
- Rulesets that map to real segmentation, not history
- Overly-permissive and dead rules retired safely
- An estate that stays current by design
How we engage
Engagements usually begin with a ruleset audit: shadowed rules, redundant entries, overly-permissive sources, and rules that no longer correspond to a system that exists. The audit produces a retirement plan with safe sequencing, not a wall of red.
Architecture work follows: segmentation that maps to how the business is actually organised, identity-aware policy where the platform supports it, and a clear convention for naming, ownership, and review.
Lifecycle becomes routine: firmware on a published cadence, configurations in git, and a change board that meets weekly rather than reacting to outages. We can stand the practice up and hand it over, or we can run it as a managed service.
Frequently asked
Our estate is a mess after years of acquisitions. Where do you start?
Inventory first, audit second, architecture third. We will not propose new policy until we have an honest map of what is actually deployed and what it allows. The map alone often closes the most pressing gaps.
Palo Alto, Fortinet, Cisco — do you have a preference?
We have engineers deep in each. Vendor selection should be driven by your existing skills, your operational model, and the realistic five-year cost — not by the preferences of the firm advising you.
Can you take over our existing firewall operations?
Yes. We can run the estate as a managed service, with named engineers, agreed change windows, and reporting that lands with your CISO each month.
Begin a conversation → about firewalls, or speak with a senior engineer about where it fits your wider estate.